[en] Interest in the decentralised nature of blockchain-based distributed ledgers has rapidly grown over
the past few years. While a portion of this interest is fuelled by the price surge in Bitcoin towards the
end of 2017, numerous companies across industries such as healthcare and finance have shown a keen interest in this technology and begun investing in diverse research projects.
The work presented in this dissertation proposes a series of enhancements to blockchain-based distributed ledger technologies by focusing on a key element in the system: the transaction. By investigating the life cycle of a transaction in popular blockchain systems like bitcoin and ethereum, several enhancements were identified to tackle some of the challenges under active research today by the blockchain community.